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RealVideo at a glance
RealVideo
RealNetworks released the first RealVideo codec in February 1997 as part of RealPlayer 5, pioneering internet video streaming when bandwidth was extremely limited and competing with Microsoft's Windows Media and Apple's QuickTime Streaming.
VC-1 at a glance
VC-1
Microsoft submitted WMV9 to SMPTE for standardization in 2003, and the resulting VC-1 standard was approved in 2006. It was adopted alongside H.264 and MPEG-2 as a mandatory Blu-ray Disc video codec.
Format comparison
| Feature | RealVideo | VC-1 |
|---|---|---|
| File type | Video | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1997 | 2006 |
| Inventor | RealNetworks | Microsoft |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Supported | Not supported |
| Multitrack support | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Supported | Not supported |
When to use each format
When to use RealVideo
- Your source file is already in RealVideo.
- Preserve source expectations before exporting to VC-1.
- RealVideo is commonly used in video workflows.
When to use VC-1
- Your target workflow expects VC-1.
- Improve delivery compatibility with VC-1.
- VC-1 is commonly used in video workflows.
FAQs
Why convert RealVideo to VC-1?
Blu-ray disc authoring, Windows Media HD content, legacy VC-1 archive conversion, and Blu-ray-compatible video encoding.
What changes when converting RealVideo to VC-1?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to VC-1 removes layer support. Moving to VC-1 removes streaming delivery.
What should I review after converting RealVideo to VC-1?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.